/Engine/Source/Runtime/MovieScene/Public/Evaluation/MovieSceneEvaluationField.h
Deduce the indices into Ranges and Groups that overlap with the specified time range
A range of indices for whichGetRange()overlaps the specified Range, of the form [First, First+Num)
[TRange](API\Runtime\Core\Math\TRange)< int32 > OverlapRange ( const [TRange](API\Runtime\Core\Math\TRange)< [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) > & Range ) const